DBH guide
What DBH manufactures and what sets it apart
DBH manufactures radial oil seals, also known as oil seals. These components are mounted in cylindrical housings and act on the rotating shaft through an elastomeric lip that maintains dynamic contact. Their main function is to retain lubricant (oil or grease) inside the assembly and exclude contaminants such as dust, water or particles that could damage bearings and gears.
DBH oil seals stand out for their wide variety of sizes and designs, which allows covering replacement needs in equipment from different industries. The brand offers series with different lip materials and construction configurations, suitable for peripheral speeds and temperatures typical of industry. In Argentina, they are an option for plant maintenance, where they are compared by size, design and material with oil seals from other brands.
DBH lines sold by MR
At MR Accesorios Industriales we sell DBH radial oil seals, which correspond to the Seals and oil seals category. Within this category, we work with the Radial oil seals subcategory, with an online catalog by code and sizes.
DBH oil seals are presented in numerical series that group specific sizes and designs. Below we detail the main series with their representative codes.
Main series of DBH oil seals
DBH oil seal codes are consecutive catalog numbers: the first two digits group a range of the list, but do not by themselves define the size or design. Each code has associated dimensions (shaft × housing × height) and its lip design. Below are some catalog ranges with examples and their dimensions.
52xx Series
52xx range of the DBH list, with radial oil seals. Example codes: 5200 (shaft 60 mm, housing 80 mm, height 10 mm) and 5201 (60 × 80 × 13 mm).
51xx Series
51xx range of the DBH list, with radial oil seals. Example codes: 5100 (shaft 34.93 mm, housing 61.90 mm, height 11.90 mm) and 5101 (31.75 × 60.50 × 12.70 mm).
80xx Series
80xx range of the DBH list, with radial oil seals. Example codes: 8001 (shaft 98.42 mm, housing 130 mm, height 19 mm) and 8004 (26 × 42 × 8/17 mm).
53xx Series
53xx range of the DBH list, with radial oil seals. Example codes: 5300 (shaft 40 mm, housing 62 mm, height 11.50 mm) and 5301 (40 × 62 × 13 mm).
54xx Series
54xx range of the DBH list, with radial oil seals. Example codes: 5400 (shaft 19 mm, housing 41.24 mm, height 6.35 mm) and 5401 (22.22 × 41.25 × 11.11 mm).
92xx Series
92xx range of the DBH list, with radial oil seals. Example codes: 9200 (shaft 20 mm, housing 32.70 mm, height 8.60 mm) and 9201 (40 × 90 × 12 mm).
82xx Series
82xx range of the DBH list, with radial oil seals. Example codes: 8200 (shaft 41 mm, housing 50 mm, height 5 mm) and 8201 (51 × 61 × 5.50 mm).
81xx Series
81xx range of the DBH list, with radial oil seals. Example codes: 8101 (shaft 120 mm, housing 140 mm, height 13 mm) and 8104 (90 × 110 × 10 mm).
83xx Series
83xx range of the DBH list, with radial oil seals. Example codes: 8300 (shaft 30 mm, housing 46 mm, height 8 mm) and 8301 (150 × 180 × 15 mm).
87xx Series
87xx range of the DBH list, with radial oil seals. Example codes: 8700 (shaft 60 mm, housing 85.10 mm, height 12.70 mm) and 8701 (47.60 × 70.55 × 13.50 mm).
How to read a DBH code
The designation of a DBH oil seal is a four-digit number that identifies the reference in the brand's list and, in some cases, a suffix indicating the lip material (e.g., Vit) or another variant. The number does not encode the dimensions: each code has associated shaft, housing and height dimensions and its lip design, which are consulted in the MR online catalog.
Below we show real examples of DBH codes with their dimensional interpretation.
Example 1002
Code 1002 corresponds to a radial oil seal with 34 mm shaft diameter, 50 mm housing and 7 mm height. In our catalog you can see the technical data sheet with dimensions and lip design.
Example 1005
Code 1005 identifies a radial oil seal of 28.57 × 41.25 × 6.35 mm (shaft × housing × height). It is important to verify the dimensions before placing the order, as similar codes may have differences of millimeters.
Example 1006
Code 1006 represents a radial oil seal of 33.32 × 46.05 × 8.63 mm. The numerical designation does not allow deducing the dimensions, so we always recommend confirming the dimensions with the old oil seal or with the equipment drawing.
Example 1009
Code 1009 is a DBH radial oil seal of 41.28 × 53.98 × 6.35 mm. If you have doubts about the equivalence with another brand, you can send us a photo of the oil seal and we will help you identify it.
Frequent DBH prefixes and suffixes
DBH codes may include suffixes that indicate special characteristics of the oil seal. The most common are:
Pol: suffix for lip material variant (same as Vit, Sil and Tef). For example, 1001Pol has shaft 25 mm, housing 40 mm and height 8 mm.
Vit: indicates that the oil seal lip is made of Viton (FKM), an elastomer resistant to high temperatures and chemicals. For example, 1122Vit.
R, H, AH: part of the design designation (e.g., Lx-R-H or A098-R AH); the data sheet for each code indicates its design.
It is important not to confuse suffixes with numerical series. If in doubt, consult the technical data sheet of the specific code in our catalog.
Applications by industry in Argentina
DBH oil seals are used in a wide variety of industries in Argentina. Below we detail the main applications by sector.
Metallurgy
In the metallurgical industry, DBH oil seals are used in rolling mills, presses and machine tools. They protect spindle and transmission shaft bearings against ingress of chips and coolants, and prevent oil leaks in gearboxes.
Agriculture
In the agricultural sector, DBH oil seals are mounted on tractors, harvesters and seeders. They withstand dust and mud conditions, and maintain lubrication in wheel shafts, gearboxes and hydraulic systems.
Naval
In the naval industry, DBH oil seals are used in bilge pumps, winches and auxiliary deck equipment. The material is selected according to exposure to salt water and vibrations.
Oil and gas
In the oil industry, DBH oil seals are installed in extraction pumps, compressors and drilling equipment. They work in environments with hydrocarbons and high temperatures, so materials such as Viton are selected.
Food
In the food industry, DBH oil seals are used in mixers, conveyors and packaging machines. The lip material is selected according to the fluid and frequent washing with water and detergents.
Mining
In mining, DBH oil seals are mounted on crushers, mills and conveyor belts. They work with abrasive dust and intense vibrations, so robust designs are required.
Paper
In the paper industry, DBH oil seals are used in paper machine rollers, pulp pumps and dryers. They must withstand humidity and high temperatures of drying processes.
Cement
In cement plants, DBH oil seals are installed in gearboxes, fans and screw conveyors. They work in environments with fine dust.
Energy
In power generation, DBH oil seals are used in motors, gearboxes and pumps. They must ensure sealing in rotating shafts with oil or grease lubrication.
Automotive
In the automotive industry, DBH oil seals are mounted on engines, gearboxes and differentials. They prevent oil leaks on shafts such as the crankshaft, camshaft and gearbox and differential shafts.
Plastics
In the plastics industry, DBH oil seals are used in gearboxes, hydraulic pumps and motors of extruders, injection molding machines and blow molding machines. They maintain lubrication and protect bearings from ingress of contaminants.
Refrigeration
In refrigeration plants, DBH oil seals are installed in gearboxes, brine pumps and conveyors. The lip material is chosen according to the low working temperature and washing.
Sugar
In the sugar industry, DBH oil seals are used in cane mills, juice pumps and centrifuges. They work in humid environments with bagasse, so effective sealing is required.
How to choose the correct DBH oil seal
To select the appropriate DBH oil seal, it is essential to know the three main dimensions: shaft diameter (d), housing diameter (D) and height or width (h). These measurements can be obtained from the old oil seal with a caliper or from the equipment drawing.
In addition to dimensions, the lip material must be considered. Nitrile (NBR) is suitable for temperatures up to 100°C and mineral oils. Viton (FKM) withstands up to 200°C and resists aggressive chemicals. The lip design (single, double, with spring) influences the retention and exclusion capacity of contaminants.
The peripheral speed of the shaft and the fluid pressure are also important criteria. For high speeds, oil seals with low-friction lip are recommended. If there is internal pressure, designs prepared for pressure are needed: standard radial oil seals admit very low pressures.
In environments with a lot of dust or water, it is advisable to choose oil seals with auxiliary lip or double lip. For applications with shaft misalignment, there are oil seals with flexible lip or special design.
Always verify the complete code of the oil seal, including suffixes, to ensure compatibility. If you have doubts, you can consult us with the code or dimensions and we will help you identify the correct product.
Equivalences and interchangeability
Oil seals are compared by their dimensions (shaft, housing and height), lip design and material. In our catalog, some DBH codes match the same SKF code, which facilitates replacement when you bring a reference from another brand.
For example, DBH code 8885 matches SKF code 8885. Other examples include 8017, 9304, 9700, 9878, 8782, 9934 and 6729, all with matching code in SKF.
It is important to compare not only dimensions but also lip material and spring design. A dimensional equivalence does not ensure the same performance if the material is not suitable for the application. Therefore, we recommend verifying the technical data sheet of each code before replacement.
If you have an oil seal from another brand or an unidentified part, you can send us a photo and the dimensions, and we will help you find the equivalent DBH oil seal.
Common mistakes when replacing or buying DBH oil seals
One of the most common mistakes is ordering the oil seal only by shaft diameter, without verifying the housing diameter and height. This can result in an oil seal that does not fit correctly and causes leaks.
Another mistake is ignoring the lip material. Using a nitrile oil seal in an application with temperatures above 100°C or with aggressive fluids will cause premature failure. Always check the type of elastomer.
It is also common to confuse suffixes. For example, an oil seal with Vit suffix is not the same as one without suffix, even if the base number is similar. The suffix indicates a critical characteristic of the product.
When mounting the oil seal, a typical mistake is damaging the lip when passing it over keyways or sharp edges of the shaft. A mandrel or protector should be used to avoid cuts in the elastomer.
Finally, not verifying equivalence with the original brand can lead to buying an oil seal with correct dimensions but inadequate design. Always compare complete specifications.
Assembly, lubrication and maintenance
Correct assembly of a DBH oil seal is key to its service life. Before installing, clean the housing and shaft, and verify that there are no burrs or surface damage. Apply a thin layer of lubricant on the lip and on the outer diameter of the oil seal to facilitate insertion.
Use a suitable assembly tool that presses uniformly on the outer diameter of the oil seal. Never hit the oil seal or the lip directly: always use a tool that distributes the force, as you can deform it and cause leaks.
If the shaft has keyways or threads, cover them with a protective sheet or tape to avoid damaging the lip during assembly. Make sure the oil seal is perpendicular to the shaft and fully seated in the housing.
During operation, periodically check the condition of the oil seal. Oil leaks, dust accumulation on the lip or abnormal vibrations are signs of wear. Replace the oil seal at the first signs of failure to avoid major damage to bearings and gears.
In service, the lip is lubricated by the equipment's own lubricant; beyond the initial assembly film, no grease needs to be added, unless the manufacturer indicates otherwise. Keep the area around the oil seal clean to prolong its service life.
Why get a quote for DBH oil seals at MR Accesorios Industriales
MR Accesorios Industriales has been working in the industrial sector since 1945 and sells DBH oil seals from Buenos Aires, Argentina. Our online catalog allows you to search by code and see dimensions and design of each oil seal.
We work with DBH radial oil seals and can help you identify the correct code from the dimensions or a photo of the part. If you have an oil seal from another brand, we can also look for the DBH equivalent.
Get a quote via WhatsApp or email by sending the code, dimensions or a photo of the oil seal. We will respond promptly with the right option for your application.
Frequently asked questions about DBH
- What is a DBH radial oil seal?
- A DBH radial oil seal is an oil seal mounted in the housing of a rotating shaft to prevent lubricant leaks and ingress of contaminants. It usually consists of a metal body and an elastomeric lip that maintains contact with the shaft.
- How to identify the code of a DBH oil seal?
- The DBH code consists of a four-digit base number and sometimes a suffix such as Pol or Vit. To identify it, measure the shaft diameter, housing diameter and height, and compare with the catalog tables or consult us with a photo.
- Does DBH have equivalents with other brands?
- Oil seals are compared by dimensions, design and material, and some DBH codes match SKF codes. For example, DBH code
8885matches SKF8885. Always verify that the material and design are suitable for your application. - What does the Vit suffix mean in a DBH oil seal?
- The Vit suffix indicates that the oil seal lip is made of Viton (FKM), an elastomer resistant to high temperatures (up to 200°C) and aggressive chemicals. It is suitable for applications with synthetic oils or corrosive environments.
- How to choose the correct DBH oil seal for my equipment?
- You need to know the three dimensions: shaft diameter, housing diameter and height. Also consider the lip material (nitrile or Viton), shaft speed and environmental conditions. If in doubt, send us a photo of the old oil seal.
- Where to buy DBH oil seals in Argentina?
- You can get a quote for DBH oil seals at MR Accesorios Industriales, located in Buenos Aires, Argentina. We sell DBH radial oil seals with references in our online catalog. Send us the code or dimensions via WhatsApp or email and we will respond promptly.
- What industries use DBH oil seals?
- DBH oil seals are used in metallurgy, agriculture, naval, oil and gas, food, mining, paper, cement, energy, automotive, plastics, refrigeration and sugar industries. Each industry has specific material and design requirements.
- How to mount a DBH oil seal correctly?
- Clean the housing and shaft, apply lubricant to the lip and use a tool that presses uniformly on the outer diameter. Avoid damaging the lip with keyways or sharp edges. Verify that it is perpendicular and well seated.
Updated September 29, 2026